Parkinsonâs Disease (PD) is a chronic, progressive disorder that affects nerve cells deep in the brain responsible for planning and controlling body movement. Dopamine is a chemical used in body movement.erve cells in the substantia nigra produce the neurotransmitter dopamine and are responsible for relaying messages that plan and control body movement. For reasons not yet understood, the dopamine-producing nerve cells of the substantia nigra begin to die off in some individuals.
Trends in Alexandria, LA Real Median Household Income since 2005. The current median household income for Alexandria is $42,778. Real median household income peaked in 2008 at $46,891 and is now $4,113 (8.77%) lower. From a post peak low of $37,615 in 2011, real median household income for Alexandria has now grown by $5,163 (13.73%).
According to the U.S. Census Bureau, the Alexandria CDP has a total area of 11.1 square miles (28.8 km2), of which 0.012 square miles (0.03 km2), or 0.11%, is water. As of the census of 2010, there were 3,917 people, 1,505 households, and 1,150 families residing in Alexandria. The population density was 352 people per square mile (136.1/kmÂ²). There were 1,599 housing units at an average density of 143.6 per square mile (55.5/kmÂ²).